Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-11

  • question_answer
    When simplified, the product\[\left( 2-\frac{1}{3} \right)\left( 2-\frac{3}{5} \right)\left( 2-\frac{5}{7} \right)...\left( 2-\frac{997}{999} \right)\] is equal to

    A)  \[\frac{5}{999}\]          

    B)  \[\frac{1001}{999}\]

    C)  \[\frac{1001}{3}\]        

    D)  None of these

    Correct Answer: C

    Solution :

    Expression \[=\left( 2-\frac{1}{3} \right)\left( 2-\frac{3}{5} \right)\left( 2-\frac{5}{7} \right)...\left( 2-\frac{997}{999} \right)\] \[=\left( \frac{5}{3} \right)\left( \frac{7}{5} \right)\left( \frac{9}{7} \right)...\left( \frac{1001}{999} \right)=\frac{1001}{3}\]


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